Sand-tester pump



April 10, 1928. 1,665,967

G. F. LE BUS SAND TESTER PUMP Filed May l2, 1927 v,Fii E Bmw@ ATTORNEY Patented Apr. 10,l 1928.

'Gnon'en F; LneBUs, fonnLneTnApfrExAs,

SAND-'TESTER PUMP. i

Application lfired May-121, 1927a seriainq.i1so,^s5s=- i This pumps. 1

Itis'custoin-ary in drilling oilV wells by theI rotary vmethod! ftofdrill aheadof Athey nua-inAV fholely 'with a -smalldrillf Whenfanoil sand.

influential, the casingfis set'andr theniud and.

water `is-V bailed Vronrthe holes-1in,` order :to

test:fthe-sandA However, it yisnot possibleI tof remove-all inn d and .water by. baili ng, .due

tothefact that vvthev r high pressure rotary:v Vpumps used inhrotary drilling forces `inudfV and. water into the; oil sands.

y An object of the* pre-sent inventionisthe provisio11-ot`: an l. economical land positive workingfpuinpfor producing a suction` lon oillsands while .shutting oiinud and water froni the Sandfso' that 'the-suotionei'ect :iis-A applied 'to tliefoil' sands only, thusv eliminatingtl1e=piz1ctice pipe setting andbailing.-

f appended claims.

A .further object 'of the invent-ionI is the'. previsioni-of a sandtester pump whicl-ihis] operated bydraising .and lowering the-'drill v ypipes@ .thatwlhen the pump is loweredffluid will bel/forced from the saudland out through fp v 'onto' the lowei. endof the sleeve Vy16 4'middel-asfYY the drill pipe.

, Aisu11-furthef0bjeet of the invention .is the provision of a sand tester pun'ipwhich is adapted to bereciprocated in an oil'well to reinove oil vsands `for :testingv and -f inr which is4 employed a :niovable friction' dogto retain a backlpressui'e valve in position to prevent the iuids: in the 'holelfroin passinginto the the pump isbeing pump and drill pipe when loweredlin the hole. v

This.: invention will Y Y be? best J understood from va consideration'kof the following fde`- tailed description inl view of they aeeom- Y panylng drawings vforming ja part of the'v specification; neverthelessl it is to'be undertures of fthe invention-as expressed inthe Figure l is a longitudinali-section ofxa sand tester puinp constructed yin accordance 1 with the principles of my invention,y

f F1gu-re2 is a. longitudinalivertlcalsection `ot 'thepumpshown inFigure l 'and in op,-

era'tive positiony for pumping,y

' Figure 3 is au enlarged sectional view 'ol'l the pump:witlrthe-valves in open position so` tha-t thealpunip niaybe readily-removed from the Awell,

invention f relates Y to sand 1 'tester n* interloeling ren-gagenieI-itfwith ithe valve seatv vided "withl a pluralityf of" Figure .5 is a view in perepectiveof afsimif' lairly Iconstructed valve seat 'adapted to'ihave shownin Figure 4,3

Figure 6 is a view in perspectiveand'partly .in section-of a. litri-ctionalstopfto control thebaek pressurevalvq--and 1 `f Figure 7 is! a -view in perspective? of the bael'lpressurevalveui V Reiferringlniore particularlyvto the dr'ajwl ings7` 10; f designates-a 'i dril 'stenu'A having threeL ded t engagement at ll' y*with a 1 plunger body l2. The plunger is slidably I`mounted indre tubular body in'einbei-Hl'whioh has a? member y114; as shown fat 15.` i i A vsleeve .16 enci-rclesthe `ste1'n1-lO,- a packer" 17 iis mounted on thefsleeve 16- and isifina-inf tainedlin:placeby means of-a nut 18 threadf' edfouthezsleeve16 and a rib 19ormedin-- tegrally with saidfsleeve 16: -v y l A packing =glandf or` :sleeve V20 is threaded a recess l2l itc receiveaninternalpaekerQZf this sleeve has a threadedf engagement at 23-l wi-ththefplunger (12fand lthethreadsare of 1 whichiarexserewedfa nut 25 whichforins theI guide for a .valve stem-26.1" This nut-is `pro-'y passages 27y tl-irouglrlwhichfluid.inaypass -V A ren-lovableg valve seat 28 Vis threadedinto the lowe'riv end of the plunger- 12 'and yis pro` end of thestein-nndisadapted to lin-iit the downward movement sof thef'-va'l`v`ef30.v

Thor valve seat fis* provided withf depending g Vable through i a zslot 36: carried by. the. ,lug i B21 which is;` adaptedito lbe engaged. by a nut" 3711` threadedoiitothe lower end ofe rod 35i-li Y spring 57.

The body 13 `is threaded onto the upper reduced end 38 of the lower body member 14. The sleeve 34 has external threads which engage with the internalr threads 39 of the body member 14. This sleeve as shown at 40v is provided with a valve seat yadapted to be engaged by an intermediate valve 4l which carries a stem or guide rod 42 slidably mounted in a nutv 43 threaded into the internal threads 39 of the body member 14. A nut 44 on the lower end of the guide rod 42 limits the upward movement of the valve` 4l when said nut moves into engagement with the nut 43; the last mentioned lnut is provided with passages `45 to permit the l'low of fluid from the lower end of the pump to pass `the valve seat 40. Y

A friction stop generally designated by the numeral 46 is adapted to control the upward movement of a back pressure valve 47 as shown more particularly in FigureV (i. This stop consists of an annular ring 4S which has a diametrically disposed rib 49. This rib is provided with-diametrically disposed `passages 5() in which a pair of pins 5l are slidably mounted and a coil spring 52 located at. the inner end of the pins `is adapted to maintain the pins in projected relation from the outer ends of the passages and 'extending beyond the outer surface of the ring 48to engage either an annular groove v53 or an annular groove 54.

The back pressure valve 47 has an upwardly extendingl stem 55 adapted to be engaged by the frictional stop 46. The valve 47 has grooved depending flanges 56 which are employed by the upper end of a coil This coil spring at its lower inner end is seated upona tubular connection or sleeve 58 which is secured to a perforatedvintake of the pump. rlhe valve 47 is adapted to engage a seat 59 formed integrally with the body member 14.

The packer 60 has its upper end in engagement with the lower end of the body member 14 and its lower end is engaged by a nut 61 threaded onto the connection 58. This packer is only employed when the well is only of a limited depth. When the well has any extended depth, the packer 60 is re.-v moved and the packer 17 only is employed.

Either packer, however, contacts Vwith the y walls of the well and prevents water and mud from the upper portion of the well from entering the oil sands.

The operation of my device is as follows:

Before lowering the pump into the well, the frictional stop 46 is placed in engagement wit-h the annular groove 53 and in this position of the stop, the valve 47 remains closed and the fluid, as shown in Figure l is prevented by said valve from enterin the pump and pipe while the pump is being lowered into the hole. The pump is then lowered to the bottom of the hole and either packer 60 or 17 is employed to prevent mud and water from above either of the packers from escaping to the oil sands. rlhe packer 60 as has been explained is only employed when the hole is but a few feet deep.L y

After the packer has been seated, the drill Vpipe is turned to the right and the rthreads are unscrewed allowing the plunger to be lowered to the lower end of the body member '13. This time the rod 35 comes in contact with the topy of the valve 4l causing said intermediate valve to seat and forcing the friction member 4G downwardly until the pins 5l engage the groove v54. At'this time the back pressure valve 47 has been opened, since the member 46 has engaged the stem 55 of the back pressure valve and forced it olf of the seat 59. The valve 47 isy therefore maintained open while the fluid is being pumped into the well.

After the well has been pumped sufliciently to test the sand, the plunger l2 is lowered untilthe cooperating lugs 32 engage with the lugs 33 whereby the sleeve 34 is locked for simultaneous rotation withthe seat 28 and plunger l2. On turning the plunger to the right, valve seat 28 having a left hand threaded connection with the plunger, screws away from the valve 30, the travel being limited by the stop 36. This operation releases all of the valves and the drill pipe can be removed from thehole allowing the fluid. to run back through the pump.

ln case the well does not pump sull'iciently to force the fluid out at the top and it is desired to see how much or what kind of liquid :is in the drill pipe and pump, the drill pipe can be removed with valves 30 and 4l closed, whereby the fluid is maintained in the drill pipe and can be collected by the removal of the pump.

ln order to close valvesBO and 4l it is only necessary to rotate the stem in the opposite direction to that which closed the opening of said valves whereby said valve 3() will be moved into position when the pump is lifted, the valve 4l having' been closed by the reverse rotation of the stem.

l. A sand tester lpump comprising a body lll() member, a plunger adapted for sliding 13evr 'noemer L 'fromitsnseatg af thir dv :valve located betvveen the: plungerwvalvei and@l the s' ba'clrg.` pressure l'value fand-u adaptedletoz-'bm opened when tthe "last @mentioned nneans is- 'moveddin fthe'- opf p'os'itadirection;--` }--1 v.

ime'mber,f=;-a rnplung'er i' adapted tor slidingy fmovementnin :the :body 'member-,5 a1` stem!` coninectedVu with;` the,r plun ger,l afslejeve havin g1 a threaded 4connection with 'the uplungerrl and f adapted 1 toil be* released from the `plunger 'anhenrrthezsaidy plunger fisrotatedi un one d1- rectiongesaid. Aplunger beingf fprov'ided|` with@ a seat, a valve slidablymountedifin,thepluznger ''andva'dapted:y tonorma'lly engage .the seat, a spring: Spressed :back .-pressure' valvef-slidably unounte'dfin'lthefbody" member, a1 seat in the .bodywmember adapted tomberV engaged' by fthe bacl :pressureivalve, tlhebmly.` member :being :provided with spaced annuiarfgrooves inv the .inner availl thereof; a valve operating i means .havingsspring pressed pins-'adaptent to en .gage-a groove,f--said.valve-operating means adaptedto Ibeauoved- 1n-one direction by the l mentioned .valveffor ycausing'open mg lot the back pressure valve.l i i sand testerwpumpcomprising a body member, a plunger adapted for sliding movement in the body member, a stem con nected 'with Vthe plunger, a sleeve having threaded counection'vvith vthe plunger and adapted to be released from the plunger when the said plunger is rotated in'one direction, said plunger being provided With a seat, a valve slidably mounted yin the plunger and adapted to normallyengage the seat, a

"spring pressed back pressure val-ve slidably last mentioned means is moved inthe opposite direction, the third mentioned valve havmg a. valve seat, cooperative means between the last mentioned valve seat and the plunger valve seat whereby rotation ot .the f' plunger will cause the plungervalve seat to be moved out of operative relation With the plunger valve. y

4. A sand tester pump comprising a body `member, a plunger adapted for' sliding movement in the. body member, a stem connected with the plunger, a. sleeve having.A threaded connection With the plunger and adapted to be released from therplunger when the said plunger is rotated` in one direction, said plunger being provided With a seat, a valve lslida'bly mounted in the plunger and adapted' -to normally engage the seat, aspring pressed back pressure valve slidably mounted in the body member,

rb'acl: .pressurev valvetironr'il its rfseat,=1means"l in thebody member,cooperatmgfwithifmeans 570 lclef-.tbeplungerr valve" seat :tofreliease'flthe 'iplungeruvalvefseat: to' an inoperativexposi# -tionireltiveto the plungervalve.l i .aw 511A sand `testernpump comprising; abody .ment iin fthe body! member, a stem connected with :the:` plunger,l av sleeve :having threaded connection v4with the :plunger iandv adapted to "member, a iplun ger adapted for slidingxmove- 57B :ben releasedftrom :the luno'er When-'the f plunger bis rotatedri in one 11direct1on,=''.said W80 Yplunger fbeing vprovided'LWith arseat," a 'valve slidab'ly :mounted in 'the plunger 'andadaptedz'to` normally engage the: seat, said seat vl1 aving: depending zprongs, a'A .valve .':ini the tbodymenflber having a vseat',""the: dast men-4 tioned valve adapted to be engagedby'rthe `First mentioned valve, the 'seeondffmentionedivalvesezu: .having prongs adapted tofengage witlrtlie prongs Lon the'fpluing'er 'valve-seat whereby rotation of 'the -plungerwvll Icause Yifnovement oit the valve seat vthe plunger to an `inoperative position qrelativefto-'the plunger` valve' for maintaining theL plunger valve inopen position.

6. A. sand tester pump comprising a body member, a plunger adapted for sliding -n'iovement in the body member, a stem connected with the plunger', asleeve having lthreaded connection with theplunger" and adapted to be released from the plunger 'when ythe plunger is rotated inone direction, said plunger being provided With a seat, a valve slidably mountedy in the plunger andV adapted .to normally engage -the seat, said seat having depending prongs, a valve in the body member havingV a seat, the last mentioned valve adapted to be yengaged bythe first mentioned valve, thesecond Amentioned valve seat having prongs vadapted to engage with the prongs ou the plunger valve seat whereby rotation of the plunger, Will cause movement of the valve Seat inthe plunger Vto an inoperativeposition relative tothe plunger valve. for maintaining the plunger valve in open position, a back pressure valve located adjacent the second mentioned valve, c a'. seat in the bodyrmember for said back pressure valve, said back pressure valve being adapted to prevent Huid. from entering the puniip When said pump .is lowered intothe wel f 7. A sand tester pump comprising abody member, a plunger adaptedl for sliding movement in the body member, a stem connected with the plunger, a sleeve having threaded connection. With the plunger andk adapted to bejreleased from the plungerk when the plunger is rotated in one direction,r .said plunger being provided With a` seat, a valve slidably mounted in the plungerv and seat having depending prongs, a valve in the body member having a seat, the last mentioned valve adapted to be engaged by the first mentioned valve, the second mentioned valve seat having prongs adapted to engage with the prongs on the plunger valve seat whereby rotation of the plunger Will cause movement of the valve seat in the plunger to an inoperative position relative to the plunger valve for maintaining the plunger 'valve in open position, aback pressure valve located adjacent the second mentioned valve, a seat in the body member for said back pressure valve, said. back pressure valve being adapted to prevent i'luid from entering` the pump when said pump is lowered into the well, and means for releasing and maintaining. the back .pressure valve from its seat after the pump has been lowered into position.

y8. A sand tester pump comprising a body member, a plunger adapted for sliding movement in the body member. a stem connected With the plunger, a sleeve having threaded connection with the plunger and adapted to be'released from the plunger when the plunger is rotated in one direc tion, said plunger being provided with a seat, a valve slidably mounted in the plunger and adapted to normally engage' the seat, said seat having depending prongs, a valve in the body member having a seat, thelast mentioned valve adapted to be engaged by the iirst mentioned valve, the second mentioned valve seat having prongs adapted to engage with the prongs on theplunger valve seat whereby rotation of the plunger Will cause movement of the valve seat in the plunger to an inoperative position relative to the plunger valve for maintaining the plunger valve -in open position, a back pressure valve located adjacent the second men-l tioned valve, a seat in the body .member for said back pressure valve, said back pressure valve being adapted to prevent fluid from entering the pump When saidV pump is lowered into the Well, means for releasing and maintaining the back pressure valve from its seat after the pump has been lowered into position, theA last mentioned means being moved into operative engagement with the second mentioned Valve forcing` said valve from its seat When the back pressure valve is closed.

n GEORGE F. LE BUS. 

